Why could be no service on your iPhone?
Perhaps the signal around is not good or some parts of your phone got problem.
Don't worry, just check it and fix it. In this process, you may need some phone repair tools to help you resolve the problem. I
will show you in the next repair process.
- Go to a space with strong signal and
check whether the phone has service, if no, enter "*#06" on the phone
dial key for IMEI code, but no response. In this case, we can initially
determine the signal failure.
- IMEI cade displays right, SIM card
readable, and Modem Firmware function normally in the phone settings. Then , put
the phone on the multi-function heat insulated pad.
- Remove the motherboard by phone opening
tools and then unload the shield plate on motherboard. Connect the motherboard
to the PCB bracket.
- Dismantle the baseband CPU by using hot air gun about 300 degrees centigrade in baseband
CPU with BGA paste flux.
- Clean the tins on the bonding pad and then
using digital multimeter test the U1 Y1 pin of
the baseband CPU, no resistance. We can make sure the pin has been
disconnected.
- Fix the pin with phone repair tools and
re-install the motherboard to the phone, then test it, IMEI code functions back
to normal.
This is the short guide about fixing the no
service error on iPhone , it is need many kinds of phone repair tools , it's
different to find them well, maybe be you can try Vipprogrammer,
and you have any problem about phone repair can also consult it.
The related
link:http://blog.rewatechnology.com/2017/03/how-to-fix-no-service-on-iphone-6/
No comments:
Post a Comment